| Willis Design Studios | California |
| Willis Information Technologies, Inc. | Michigan |
| Williston State College | North Dakota |
| Willits Technologies | Texas |
| WillitsOnline.COM | California |
| Willoughby Design, Inc. | |
| WillowTree, LLC | Virginia |
| Wilmac Technologies | |
| Wilmington College Mathematics Major | Ohio |
| Wilmington Computer Repair | North Carolina |
| Wilmington PharmaTech | |
| Wilmington Trust | |
| Wilmington University | Delaware |
| Wilmington Web | North Carolina |
| Wilmore Electronics Co., Inc. | North Carolina |
| Wilshire Pharmaceuticals, Inc. | |
| Wilson & Ellis Consulting | North Carolina |
| Wilson AI Company | |
| Wilson Alvarez Consulting Group, Inc. | Florida |
| Wilson College | Pennsylvania |
| Wilson Computer Support | Alabama |
| Wilson Creative Group, Inc. | |
| Wilson Sonsini Goodrich & Rosati | |
| Wilson Wolf | Minnesota |
| Wiltwyck Web Design | |
| Wilya | |
| WiMAX Forum | California |
| WiMetrics | Washington |
| Wimi | California |
| Wimmer Solutions Corporation | |
| WIN Enterprises, Inc. | Massachusetts |
| WIN Learning | Tennessee |
| WIN Reality, LLC | Texas |
| Win Web Hosting | Arizona |
| Winbeam, Inc. | Pennsylvania |
| Winborn Web Design | Alabama |
| Winc Digital, LLC | Nevada |
| WinC Services, LLC | |
| Wincal BioPharm, Inc. | |
| Winchester Electronics Corporation | Connecticut |
| Winchester Systems, Inc. | Massachusetts |
| Winchester Wireless | Virginia |
| Winclap | New York |
| Wind River Internet | Wyoming |
| Wind River Systems, Inc. | California |
| Wind Serve, LLC | Georgia |
| Wind Wireless, Inc. | Washington |
| Windcrest Partners | |
| Winden Technologies, Inc. | California |
| Windfall Associates | Massachusetts |